MasterCAM post processor for EMC, anyone?

[Fred Proctor <frederick.proctor-at-nist.gov>]

EMC folks,

Does anyone have experience writing MasterCAM post processors, and could
do it for the EMC dialect? emc/programs/skeleton.ngc is a typical
program.

I ran a part through the MasterCAM Fanuc post processor, or another
fairly common one, and noted the following errors when I ran the NC code
on the EMC:

1. Prologue line "G0 G80 ..." doesn't work. You can't have G0 and G80 on
a single line. One solution is not to put G0 on this line, and force G0
for the first rapid.

2. M00 is the program pause. M01 (optional stop) doesn't work.

3. There's no G28, which is commonly used for a rapid spindle-to-home.
Use "G53 G0 Z0" instead. G53 inhibits program offsets for that block
only.

4. M2 is the program end. Some posts do M30, or M60.

5. The dwell time parameter (for G4 and some canned cycles) is "P
<seconds>", e.g., "G4 P1.5" dwells for 1.5 seconds. Some posts generate
a P value in milliseconds.

--Fred